The different P200 effects of phonological and orthographic syllable frequency in visual word recognition in Korean

► The P200 waveform in ERP studies is relative to a syllable frequency effect. ► Syllables are comprised of phonologically and orthographically defined syllable. ► The P200 waveform is only sensitive to the modulation of phonologically defined syllable frequency in go/no-go lexical decision task. ► Phonological and orthographic syllables are processed differently during the early stage of visual word recognition process.